 window.onload = function(){
	document.onscroll = function(){
		let s1 =document.documentElement.scrollTop;
		let s2 =document.body.scrollTop;
		let scroll = s1==0?s2:s1;
		let width =document.documentElement.clientWidth;
		let search = document.getElementById('fixedBox');
		if(scroll>width*0.12){
			search.style.position = 'fixed';
			search.style.left = '0';
			search.style.top ='0';
		}
		else{
			search.style.position = 'static';
		}
	}
}